... pressure:0.25Mpa-10Mpa 3.temperature :0-550Stainless steel welding neck flange 1.Type:Pipe fitting2.nominal pressure ... 5504.inside nominal diameter:10-1200mm5.Material:stainless steel, carbon steel, alloy steel(Q235,20#,16Mn,ST45.8,12CrMoV,15CrMo,ooCr17Ni12Mo2, ... Yitong Tubes and Fitting Manufacturing Co,Ltd is a special steel tubing company which combines scientific or research & design development; ...